Attachment foe sewing machines



Feb, 10, 1925'.

' A, ALTO ATTACHMENT FOR SEWING MACHINES Filed March 10, 1924 INVENTOR.

\ ATTORNEY.

Patented Feb. 10, 1925.

UNITED STATES ARVI ALTO, OF WAREHAM, MASSACHUSETTS.

ATTACHMENT FOR SEWING MACHINES.

Application filed March 10. 1924. Serial No. 698,239.

To all whom it may concern:

Be it known that I, AnvI ALTO, a citizen of Finland, residing at Wareham, in the county of Plymouth and State of Massachusetts, have invented certain new and useful Imprcvements in Attachments for Sewing 'Machines, of which the following is a specification.

- This invention relates to an attachment for sewing machines and is designed pri marily for use in the manufacture of moccasins, but it is to be understood that an attachment in accordance with this invention can be employed for any purpose for which it is found applicable, and the invention has for its object to provide, in a manner as hereinafter set forth, an attachment for sewing machines including means to expedite the sewing of the sections of a moccasin together, that is to say, the top or the upper to the bottom or body portion of the mocca- S111.

Further objects of the invention are to provide, in a manner as hereinafter set forth, an attachment for sewing machines for the purpose referred to and which is simple in its construction and arrangement, strong, durable, thoroughly efficient and convenient in its use, readily assembled, and comparatively inexpensive to manufacture.

With the foregoing and other objects in view, the invention consists of the novel construction, combination and arrangement of parts, as hereinafter more specifically described and illustrated in the accompanying drawin s, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views Figure 1 is a top plan view of an attachment in accordance with this invention, showing the adaptation thereof in connection with the sections of a moccasin.

Figure 9- is a longitudinal sectional view of a moccasin showing the adaptation therewith of an attachment in accordance with this invention.

Figure 3 is a side elevation of the attachment and further illustrating the moccasin in dotted lines.

An attachment in accordance with this in vention provides means for holding the sections of a moccasin together, with the op posed marginal portions of the sections extended in position to be sewed or stitched, and further to constitute a guide during the sewlng or stitching operation and to present the extended opposed marginal portions of the sections of the moccasin in the path of the needle of the sewing machine.

Referring to the drawings in detail, 1 denotes the top section or upper of the mocca- S111 and 2 the bottom or body section thereof and when said sections are in position to be stitched or sewed together, they are maintained in abutting relation and with the opposed marginal. portions thereof extended and clamped together in the manner as shown in Figures 2 and 3. The extended marg nal portion of the section 1 is indicated at 3, and that of the section 2, at 4. lVhen the sections 1 and 2 are arranged to be sewed or stitched, the marginal portion of the lower part of section 1 is extended a sufficient distance and the marginal portion of the top of the section 2 is also extended a suflicient distance so that the extended mar ginal portions will be of the necessary width to receive the stitching so that the said sect-ions will be properly secured to gether to complete the moccasin.

The sections of the moccasin are mounted upon a sectional last 5 of the desired contour for the purpose of affording the desired shape to the moccasin and the sections of the latter when mounted on the last 5 are clamped thereto by the attachment forming the subject matter of this invention.

The attachment includes a pair of oppo sitely disposed combined track and holding elements and each of which is resilient for the purpose of clamping the sections of the moccasin to the last 5. One of said elements is indicated at 6 and the other at 7 and each of which is constructed of any suitable material, preferably spring metal. The element 6 is extended around the upper portion of the last 5 and further is positioned on the top, at the forward end, of the last 5. The element 7 is extended around the last 5 and is arranged below as well as being spaced from the element 6. The sections 1 and 2 of the moccasin are interposed between the elements 6 and 7 and the last 5 whereby the sections of the moccasin are clamped in position. hen the elements 6 and 7 are set up to secure the sections 1 and 2 to the last 5, the marginal portions 3, 4 of the sections 1, 2,

project outwardly between the opposed edges of the elements 6, 7.

The element 6 is offset throughout to provide a track 8 and a guide groove 9, and the element 7 is offset to form a track 10 and a guide groove 11.

The element 6, at its forward portion, between the side portions and the forward portion of the track 8, is fiat and forms what may be termed a semi-oval shaped holder member 19, adapted to be positioned against the forward partof the section 1 of the moccasin for holding it down during the stitchingof the section 1 to the section 2 of the moccasin. That part of the element 6, 1'1 dicated at 19, which extends rearwardly fromlhemember 19 and projects inwardly and upwardly from the side portions and rear portion of the track 8, forms what may be termed a positioning member for said element 6, as the said part 19 surrounds the rear or high part of the sectional last. See Figures and 2.

Formed integral with the forward part of theholder member 19 is a rearwardly extended centrally disposed locking lug 12,

with which associates a resilient locking bar 13 formed at its rear end with a dependinglug 14, which seatson the last 5; The locking bar 13 has extending therethrough a threaded rod 15, carried by the last 5 and mounted on the rod 15 is an adjusting nut 16 which bears against the bar 13.

,When the sections of the moccasin are mounted on the last 5, the bar 13 is sprung during the shifting of the last 5 with the sections of the moccasin thereon, the element 6 is guided and retained in position by the member 17. The elements 6 and 7 provide means to retain the extended marginal portions 3, 4, in position to be acted upon by the needle of the sewing machine.

Cooperating with the element 7 is a combined guide and holder member 20 having a grooved guide at its lower end, as at 21, for the reception of track 10, whereby the member 20 will be connected to the element 7 during the operation of stitching the m ccasin. The member 20 has an opening for the passage of the needle.

The members 17 and 20 act as a means to properly guide the moccasin when it is shifted for the purpose of securing the extended marginal portions 3, 4, together.

After the extended marginal portions 3, 4 have been secured together throughout, the nut 16 is adjusted upwardly on the rod 15, which releases the bar 18 and the element 6 can then be pulled off section 1. After the removal of element 6, the element 7 is pulled off section 2 and the last 5 is then removed from the moccasin.

What I claim is p 1. An attachment for sewing machines for the purpose set forth comprising a pair of oppositely disposed continuous combined track and holding elements for clamping the sections of a moccasin to a'lastandfurtlier for maintaining the opposed marginal ortions of said sections extended tobe stitc ed, one of said elements having a holder member at its forward portion and "a positioning 7 member at its rear portion, and a pair of guide members, each of salidguide members having one of said elements slidab'ly connected therewith.

2. An attachment for sewing machines for the purpose set forth comprising a pair of oppositely disposed continuous combined track and holding elements for clamping the sections of a moccasin to a last and further for maintaining the opposed marginal portions of said sections extended to be stitched, a pair of guide members, each of said guide members having one of said elements slidably connected therewith, and a resilient locking bar coacting with'o'ne of said elements.

3. An attachment for sewin machines for the purpose set forth comprising a pair of oppositely disposed continuous combined track and holding elements for cla-mping the sections of a moccasin to a last and further for maintaining the opposed marginal portions of said sections extended to be stitched, one of said elements having a holder membei at its forward portionand a positioning member at its rear portion,a pair of guide members, each of said guide members having one of said elements slidably connected therewith, and a resilient locking bar co-acting with said holder member.

4. An attachment for sewing machine: for the purpose set forth comprlsing a. pair of continuous combined holding and track elements adapted to clamp the sectionsof a moccasin to a last and with the opposed marginal portions of the sections extending between and projecting outwardly from said elements, each of said elements off set to provide the track, said elements arranged in superposed relation and one having a holder member at its forward portion and a positioning member at its rear portion, and a pair of guide members, each of'said guide members slidably connected to one of said tracks.

5. An attachment for sewing machines for the purpose set forth comprising a pair of continuous combined holding and track elements adapted to clamp the sections of a moccasin to a last and with the opposed marginal portions of the sections extending between and projecting outwardly from said elements, each of said elements ofl set to provide the track extending throughout thereof, one of said elements having a holder member at its forward portion and av positioning member at its rear portion, said 10 holder member formed with a lug, a pair of guide members, each of said guide members slidably connected to one of said tracks, and a locking device co-acting with said in In testimony whereof, I aflix my slgna- 15 ture hereto.

ARVI ALTO. 

